Solubility isotherms of hydrogen in epitaxial Nb(110) films

1996 ◽  
Vol 54 (19) ◽  
pp. 14093-14101 ◽  
Author(s):  
G. Song ◽  
M. Geitz ◽  
A. Abromeit ◽  
H. Zabel
Keyword(s):  
Solubility Isotherms

scholarly journals Solubility of Anthraquinone Derivatives in Supercritical Carbon Dioxide: New Correlations

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 460
Author(s):  
Ratna Surya Alwi ◽  
Chandrasekhar Garlapati ◽  
Kazuhiro Tamura
Keyword(s):  
Carbon Dioxide ◽  
Liquid Phase ◽  
Supercritical Carbon Dioxide ◽  
Binary Systems ◽  
Relative Deviation ◽  
Anthraquinone Derivatives ◽  
New Models ◽  
Solubility Isotherms ◽  
Solid Liquid ◽  
Supercritical Carbon

Solubility of several anthraquinone derivatives in supercritical carbon dioxide was readily available in the literature, but correcting ability of the existing models was poor. Therefore, in this work, two new models have been developed for better correlation based on solid–liquid phase equilibria. The new model has five adjustable parameters correlating the solubility isotherms as a function of temperature. The accuracy of the proposed models was evaluated by correlating 25 binary systems. The proposed models observed provide the best overall correlations. The overall deviation between the experimental and the correlated results was less than 11.46% in averaged absolute relative deviation (AARD). Moreover, exiting solubility models were also evaluated for all the compounds for the comparison purpose.

scholarly journals Solubility Isotherms of Reciprocal Salt-Pairs of Optically Active Cobalt(III) Complexes

1979 ◽  
Vol 52 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Akira Fuyuhiro ◽  
Kazuaki Yamanari ◽  
Yoichi Shimura
Keyword(s):  
Optically Active ◽  
Solubility Isotherms

scholarly journals Synthesis of Calcium Orthophosphates by Chemical Precipitation in Aqueous Solutions: The Effect of the Acidity, Ca/P Molar Ratio, and Temperature on the Phase Composition and Solubility of Precipitates

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1009
Author(s):  
Mykola V. Nikolenko ◽  
Kateryna V. Vasylenko ◽  
Victoria D. Myrhorodska ◽  
Andrii Kostyniuk ◽  
Blaž Likozar
Keyword(s):  
Solid Phase ◽  
Chemical Precipitation ◽  
Molar Ratio ◽  
Key Factors ◽  
Correlation Dependence ◽  
Molar Ratios ◽  
Calcium Orthophosphates ◽  
Calcium Cations ◽  
Solubility Isotherms ◽  
Solubility Products

Studies on chemical precipitation of the calcium orthophosphates have shown that their phase compositions do not vary depending on molar ratio Ca/P but are sensitive to solutions acidity and temperature. These are two key factors that determine the phase transformation progress of metastable phases into less soluble precipitates of the phosphates. It was proposed to compare calcium orthophosphates solubility products with calcium cations quantities in their formulas. It was found that there was a linear correlation between calcium orthophosphates specific solubility products and their molar ratios Ca/P if hydroxyapatite and its Ca-deficient forms were excluded from consideration. It was concluded that the relatively large deviations of their solubility products from the found correlation should be thought of as erroneous data. That is why solubility products were changed in accordance with correlation dependence: pKS for hydroxyapatite was 155, pKS for Ca-deficient hydroxyapatites was 114–155. The solubility isotherms, which were calculated on the basis of the corrected pKS values, coincided with the experimental data on solid-phase titration by Pan and Darvell.

THE SYSTEM LITHIUM SULPHATE – AMMONIUM SULPHATE – WATER

1954 ◽  
Vol 32 (7) ◽  
pp. 696-707 ◽  
Author(s):  
A. N. Campbell ◽  
W. J. G. McCulloch ◽  
E. M. Kartzmark
Keyword(s):  
Transition Temperature ◽  
Ammonium Sulphate ◽  
Room Temperature ◽  
Double Salt ◽  
Enthalpies Of Solution ◽  
Lithium Sulphate ◽  
Solubility Isotherms ◽  
Ternary Eutectics ◽  
Sulphate Water

The binary eutectics Li2SO4•H2O–ice and (NH4)2SO4–ice as well as the ternary eutectics Li2SO4•H2O–Li2SO4•(NH4)2SO4–ice and (NH4)2SO4–Li2SO4•(NH4)2SO4–ice have been determined as to temperature and composition. The complete solubility isotherms at 0.1°, 71.8°, and 95.2 °C. have been investigated. The enthalpies of solution of lithium sulphate monohydrate, of ammonium sulphate, and of double salt have been determined (in water at room temperature), and from these data, as well as from the solubility isotherms, it has been shown that the temperature of the transition of the double salt, Li2SO4•(NH4)2SO4, to its component single salts (in the presence of water) is approached by lowering the temperature, but this transition temperature is still far from reached when the system freezes completely.

Saturated Solutions of M(NO3)2-H2O-CH3OH (M = Sr, Ba) Systems

1994 ◽  
Vol 59 (6) ◽  
pp. 1342-1348
Author(s):  
Mitko D. Stoev ◽  
Jóse M. A. Robledo
Keyword(s):  
Ir Spectra ◽  
Equilibrium Existence ◽  
Solubility Isotherms ◽  
Saturated Solutions

The solubility isotherms of the M(NO3)2 - H2O - CH3OH (M = Sr, Ba) systems at 25 °C have been studied. Crystallization fields of the equilibrium existence of the salts Sr(NO3)2 .4 H2O, Sr(NO3)2 and Ba(NO3)2 have been found. The structures of the saturated solutions on the basis of statistic calculations and IR spectra have been discussed.

Solubility in the Glycine-H3BO3-H2O System

1994 ◽  
Vol 59 (6) ◽  
pp. 1337-1341 ◽  
Author(s):  
Jitka Eysseltová ◽  
Jana Dosoudilová
Keyword(s):  
Boric Acid ◽  
Vapour Pressure ◽  
Pressure Measurements ◽  
Straight Line ◽  
Title System ◽  
Solubility Isotherms ◽  
Saturated Solutions

Solubility isotherms in the title system were measured at 0, 25, 50, and 70 °C. Regression straight line equations interrelating the solubilities of boric acid and glycine were derived. The activity of water in saturated solutions of the system at 25 °C was determined by vapour pressure measurements.

A Contribution to the Study of Ternary Saturated Electrolyte Solutions

1999 ◽  
Vol 54 (8-9) ◽  
pp. 485-487 ◽  
Author(s):  
J. Eysseltová ◽  
M. Ebert
Keyword(s):  
Phase Transitions ◽  
Ternary System ◽  
Ternary Systems ◽  
Electrolyte Solutions ◽  
Second Order ◽  
Saturated Solution ◽  
Concentrated Electrolyte Solutions ◽  
Common Ion ◽  
Solubility Isotherms

A quantity has been introduced, whose dependence on the composition along the branches of the solubility isotherms of ternary systems consisting of two salts with a common ion and water exhibits breaks, which can be explained by the introduction of a previously unobserved configuration of the ternary saturated solution. In the respective region, a saturated solution in a ternary system may undergo second-order phase transitions to achieve specific configurations that are not derived from the structure of the binary saturated solution of the particular solute. It is assumed that further study of this phenomenon could contribute to a better understanding of the processes occurring in concentrated electrolyte solutions.

Sign in / Sign up

Export Citation Format

Share Document